我们的应用程序中有一个屏幕/页面，我们为不同的产品显示不同的列。列中的所有记录都是从数据库中获取的。
此外，我们在屏幕底部有两个导出按钮，用于显示 PDF 和 XLS 中的所有记录格式。
除了一种情况外，这些功能正常。我们在屏幕上有一列名称，其值从数据库中获取。当名称列下的任何记录中包含＆amp; 时，导出功能将停止工作。
例如： -
名称为“BOWOG BEHEER B.V.”，出口对pdf和xls都很好。
但是对于“BOWOG＆amp; BEHEER B.V.”的名字，它停止了工作。点击导出按钮时，pdf和xls显示为空白页。
有人可以帮忙吗？
以下是一段代码： - （不是完整代码）
public class CVRExportServlet extends HttpServlet {
private final SimpleDateFormat sdf = new SimpleDateFormat("ddMMyyyy");
/** context. */
private ResourceContext context = null;
private Map createParametersFromRequest(final HttpServletRequest request) {
// copy all request parameters
final Map parameters = new HashMap();
final Enumeration names = request.getParameterNames();
while (names.hasMoreElements()) {
final String name = (String) names.nextElement();
final String[] values = request.getParameterValues(name);
if (values.length > 1) {
parameters.put(name, values);
} else {
parameters.put(name, values[0]);
}
}
// parse request uri to get type and format
final String requestURI = request.getRequestURI();
String type = StringUtils.left(requestURI, requestURI.lastIndexOf('.'));
type = StringUtils.substring(type, requestURI.lastIndexOf('/') + 1);
final String format = StringUtils.substring(requestURI, requestURI.lastIndexOf('.') + 1);
parameters.put(Constants.EXPORT_TYPE_PARAMETER, type);
parameters.put(Constants.EXPORT_FORMAT_PARAMETER, format);
// determine themeUrl
final String requestUrl = request.getRequestURL().toString();
final int index = requestUrl.indexOf(request.getContextPath());
String server = "";
if (index > -1) {
server = requestUrl.substring(0, index);
}
private void fillParameters(final HttpServletRequest request, final HttpServletResponse response, final Map parameters)
throws ApplicationException {
parameters.put("props", ResourceBundle.getBundle("messages"));
// Create search request using the search form
final SearchForm form = (SearchForm) request.getSession().getAttribute(
(String) request.getSession().getAttribute(CvrConstants.SESS_ATTR_CVR_SEARCH_FORM_NAME));
final SearchRequest searchRequest = form.getSearchRequest();
searchRequest.setPageNumber(1);
searchRequest.setRowsPerPage(10000);
parameters.put("searchRequest", searchRequest);
}
public void service(final HttpServletRequest request, final HttpServletResponse response)
throws ServletException, IOException {
final long startTime = System.currentTimeMillis();
// create parameters from request
final Map parameters = this.createParametersFromRequest(request);
parameters.put(ResourceContext.class.getName(), this.context);
try {
this.fillParameters(request, response, parameters);
final SearchRequest searchRequest = (SearchRequest) parameters.get("searchRequest");
if (searchRequest == null || searchRequest.getCounterPartyList() == null
|| searchRequest.getCounterPartyList().isEmpty()) {
throw new ExportException("Exception occurred while handling export: empty counterparty list");
} else {
if (searchRequest.getCounterPartyList().size() == 1) {
this.handleSingleReportExport(response, parameters);
} else {
this.handleMutlipleReportExport(response, parameters);
}
}
} catch (final Exception e) {
this.handleException(e, request, response);
}
}
private void handleSingleReportExport(final HttpServletResponse response, final Map parameters) throws Exception {
final XmlExportService exportService = this.getXmlExportService();
final ApplicationContext context = this.getApplicationContext();
final XmlTransformationService xmlTransformationService = (XmlTransformationService) context.getBean("transformationService");
// perform export
exportService.export(parameters);
// perform transformation
final ExportResult exportResult = xmlTransformationService.transform(parameters);
// write result to stream
response.setContentType(exportResult.getContentType());
response.setContentLength(exportResult.getContentLength());
if (parameters.get("format").equals("csv")) {
response.setContentType("text/csv");
response.setHeader("Content-disposition", "attachment; filename=export.csv");
} else if (parameters.get("format").equals("pdf")) {
response.setContentType("application/pdf");
response.setHeader("Content-disposition", "inline; filename=export.pdf");
}
final ServletOutputStream out = response.getOutputStream();
out.write(exportResult.getBytes());
out.flush();
out.close();
}
private void handleMutlipleReportExport(final HttpServletResponse response, final Map parameters) throws Exception {
final SearchRequest searchRequest = (SearchRequest) parameters.get("searchRequest");
response.setContentType("application/force-download");
response.setHeader("Content-Encoding" , "x-compress");
response.setHeader("Content-Disposition", "attachment; filename=export_" + parameters.get("format") + ".zip");
final XmlExportService exportService = this.getXmlExportService();
final ApplicationContext context = this.getApplicationContext();
final XmlTransformationService xmlTransformationService = (XmlTransformationService) context.getBean("transformationService");
// start the zip process
final ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
// create a file for each counterparty and add it to the zip file
for (final String counterPartyId : searchRequest.getCounterPartyList()) {
// make sure to reset the counterparty to the current one in the loop
searchRequest.setCounterPartyList(Arrays.asList(new String[] {counterPartyId}));
// perform export
exportService.export(parameters);
// perform transformation
final ExportResult exportResult = xmlTransformationService.transform(parameters);
// add the file to the zip
final String fileName = counterPartyId + "_" + sdf.format(searchRequest.getRevaluationDate()) + "." + parameters.get("format");
zos.putNextEntry(new ZipEntry(fileName));
zos.write(exportResult.getBytes());
zos.closeEntry();
}
// finish the zip process
zos.flush();
zos.close();
}
我现在有点想法。实际上问题是在vm（速度模板）。 “name”列是从vm文件中获取的，代码是这样的： -
$！{result.counterpartyName}
这是针对多个记录的每个循环。任何人都可以建议我如何忽略vm文件本身的特殊字符。这样即使“名称”栏中有“＆amp;”，我们也能正确导出或“ - ”等特殊字符。
答案 0 :(得分：2)
根据您的代码，您似乎正在使用XML转换服务。
我说你的参数中的数据可能包含悬空&符号。要使有效的XML准备好进行转换，&应为&。但是，根据给定的代码，不可能说出XML数据的来源。你说它来自数据库，所以我的猜测是应该通过修改数据库中的数据来处理问题。
编辑：
我似乎部分正确，但数据库并不包含XML - 如果我正确地得到这个，数据来自数据库作为原始表格数据，但使用速度模板格式化为XML。如果是这样，那么应该在速度模板like this中使用XML转义。